The T-18 light tank (also called MS-1) was the first Soviet-designed tank based on the Renault FT

The T-18 light tank (also called MS-1). Produced by the Leningrad factory “Bolshevik” in 1927-1931. Power – 35 hp. Crew – 2 people. Armor – 8-16 mm.

Museum of the Soviet Army, Moscow

The T-18 light tank was the first Soviet-designed tank. Produced from 1928 to 1931, it was based on the Renault FT, with the addition of a vertically sprung suspension.

The T-18 and its derivatives were essentially unsuccessful designs, but they gave Soviet industry its first experiences in designing armoured vehicles, and in the meantime a number of foreign tank designs were available for production.

A “Tank Bureau” was formed in May 1924 for the development of Soviet tanks. A specification was issued for a 3-tonne two-man light tank capable of 7.5 mph (12.1 km/h). It would be protected by 16 mm of armour and equipped with a 37 mm (1.5 in) gun. By 1925 the allowable weight had increased to 5 tonnes.

The tank was designed by Professor V. Zaslavsky at a new Tank Bureau set up under the Central Directorate of Military Industries. The 35-horsepower truck engine (a copy of the Italian FIAT 15 ter) was supplied by the Moscow AMO Factory, and the gun was a modified copy of the French 37 mm Puteaux SA 18 cannon. The sprung suspension which would allow a tank to travel faster over rough ground was the biggest improvement over the Renault. A prototype called the T-16 was tested in June 1927.

The T-16 was deemed a failure, as it had problems with its transmission failing too often and its inability to cross trenches more than 1.5 m wide. The T-16’s maneuverability was only marginally better than that of the Renault. Meanwhile, the КБ ОАТ drew up plans for an improved version of the T-16 which was accepted for production in July as the T-18, with the tank additionally noted as an MS-1 (“Support vehicle, small, type 1”).

The T-18’s chassis and suspension was improved from the T-16 by the addition of an extra support roller and an independent vertical spring suspension. The 300 mm track of the T-16 was transferred over to the T-18, with some improvements. The engine, a vertical, four-cylinder MS engine, was designed and improved upon by Alexander Mikulin. The engine was capable of a maximum of 35 horsepower.

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